Lock for double doors



FIG. 1 is a front perspective view of a lock for double doors showing my new design, the broken-line showing of portions of doors for illustrative purposes only, and forming no part of the claimed design;

FIG. 2 is a front elevational view thereof;

FIG. 3 is a top plan view thereof;

FIG. 4 is a left side elevational view thereof;

FIG. 5 is a right side elevational view thereof;

FIG. 6 is a rear elevational view thereof; and,

FIG. 7 is a bottom plan view thereof. 

The ornamental design for a lock for double doors, as shown and described. 